giganormous 

Something so big, it's more than enormous.

The Tsar Bomba had a giganormous mushroom cloud. It was the detonated October 30, 1961 and is still the largest bomb ever detonated on record, lucky humanity!

giganormous by ksadya May 27, 2007

Gigantoe 

The medical condition in which one has a freakishly large big toe.

Aaron: Dude, Zack, why can you pick up rocks and stuff with your toes?

Zack: I have gigantoe. It's my blessing and my curse.

Gigantoe by P. Hap November 9, 2009

Gigantopotamus

1. A humorous name, term, or term of endearment for a fat, or slightly overweight, person.

2. A humorous name, or term, for a morbidly obese person, provided they don't hear you.

Woman: "Does my bum look big in this?"
Partner: "Of course it does Gigantopotamus"

From the words gigantic and hippopotamus.
See: Chunkosaurus

Gigantopotamus by Goatlips August 5, 2008

gigantous 

a cross between gigantic and enormous. fricken HUGE!!

wow, your house is one gigantous mofo!

gigantous by ze_kimster January 15, 2005

Gigantoslagasaurus 

A "Gigantoslagasaurus" is a half reptile, half human abomination of a woman. The natural habitat of Gigantoslagasaurus varies from shopping malls to McDonald's to horrible night club chav magnets. A "Gigantoslagasaurus" is easily identified by her slimly gross reptile features, a weight of over 15 stone, and dress sense of a Barbie doll. The most heinous feature of a "Gigantoslagasaurus" has to be her failure to recognise she is an ugly fat bitch.

"I've never seen such a despicable Gigantoslagasaurus".
"This Gigantoslagasaurus came on to me earlier, I ran for my life".

Gigantoslagasaurus by The Crimson Adder July 7, 2009

Giganormous 

A mix between the words ginormous and gigantic!

Omfg her boobs are so giganormous!

Giganormous by gawjusA July 31, 2009

Gigantormous 

to exaggerate how enormous and gargantuan something is.

Andrew the caveman was eaten by a gigantormous T-rex.

Gigantormous by i dunno iono oreo April 19, 2010